Documentation – Current v24.1

Version Comparison: Studio vs. Master

Current Documentation
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Which version is right for you?

Imatest 5.0:  All functions of Imatest Image Sensor have been incorporated into Imatest Master.


Imatest is available in several GUI (Graphic User Interface)-based versions.

  • Studio, with everything individual photographers need to test their cameras and lenses.
    Studio is only available to individual photographers.
  • Master, the full-featured industrial-strength version for engineers and scientists who develop and evaluate imaging systems. Acquire images directly from several manufacturer’s development systems. Images can be updated and analyzed in real time with the Rescharts, Multicharts, and Uniformity-Interactive modules.
  • As of Imatest 5.0, Image Sensor (IS) has been discontinued. All functionality can now be found in Imatest Master.

Imatest is also available in non-GUI Industrial Testing (IT) versions (both EXE and DLL) that are suitable for automated testing in production lines.

Comparison between versions

SFR Studio Master
SFR Any Angle: Calculate MTF for any edge angle.  
SFR and SFRplus Studio Master
Secondary readout (MTFnn, MTFnnP, or MTF @ spatial frequency) 1 2
Edge roughness analysis  
Batch runs (multiple input files) 6 max. Unlimited
Noise histograms  
Display MTF for R, B, and B channels, in addition to Y (luminance) channel  
SFRplus Studio Master
3D plots MTF50-only Multiple results, including Secondary readouts
Blemish (Master/IS-only) Studio Master
Detect visible sensor defects. Highly tunable.
Colorcheck Studio Master
Tonal response and noise analyses for B&W patches
L*a*b* color error and Color analysis
Batch runs (multiple input files) limited
User-supplied reference files  
Noise analysis for R, G, B, C, M, and Y patches; noise spectrum  
Dot pattern (Master/IS-only)    
Measure distortion and lateral chromatic aberration from a dot chart (I3A CPIQ-compatible)  
Multicharts Studio Master
Interactive analysis of tones and colors in the X-Rite Colorchecker (24-patch and SG) and IT-8.7 charts
Analysis of ChromaDuMonde 28, UTT, specialized grayscale, and other charts
User-supplied reference files  
Special charts: analyze patterns of squares arranged on a circle as well as many special Color, Imatest 36-patch Dynamic range, ISO, and Other test charts, many of which are also analyzed by Stepchart for Imatest Master .  
Stepchart Studio Master
Tonal response, noise, and dynamic range analysis
Batch runs (multiple input files) limited
Tonal response for separate R, G, B, Y channels (figure 3)  
Chart density (reference) values can be read from a file.  
Analyzes several non-linear (multiple row or circular) charts such as the Imatest 36-patch Dynamic range, and ISO-14524 (OECF), ISO 15739 (Noise), ISO 16067-1 (Scanner), QA-62, and ST-51 (EIA grayscale) charts.  
Rescharts Studio Master
SFR Edge and MTF plots, Chromatic aberration plots. See SFR (above) for more details.
Log Frequency MTF plot
Log Frequency Color moiré plot  
Log Frequency-Contrast module; shows effects of noise reduction,

Wedge (CIPA DC-003 “Vanishing resolution”),

Random pattern (highly sensitive to noise reduction)

Light Falloff Studio Master
Light falloff (luminance channel) displayed in normalized pixel levels and f-stops
Batch runs (multiple input files)  
Light falloff for R, G, and B channels  
Display dead and hot pixels  
Histograms for R, G, and B channels  
Display color shading (color nonuniformity of sensor)  
Noise detail  
Test Charts Studio Master
SFR Quadrants, SFR rectangles, Grid (for Distortion)
Star, Log-frequency contrast/gradient, Zone plate  
Create Scalable Vector Graphics (SVG) charts.  
Distortion Studio Master
Calculate distortion for 3rd and 5th order polynomial and tan/arctan approximations.
Batch runs (multiple input files)  
Calculate lens decentering  
Intersection point plot  
Corrected image display  
MTF Compare (Master/IS-only) Studio Master
Allows MTF results calculated in SFR and saved in CSV files to be compared for a wide variety of cameras, lenses, and imaging systems.  
Print tonal response and gamut in La*b* and xyY spaces
Print gamut in HSL representation